Frequencies for first 10,000 rows of drg2ing4 variable in namcs2003 dataset : ingredient | code #4 for | medication | #2 | Freq. Percent Cum. ------------+----------------------------------- | 9,967 99.67 99.67 53175 | 3 0.03 99.70 54238 | 1 0.01 99.71 54440 | 1 0.01 99.72 54713 | 1 0.01 99.73 55105 | 1 0.01 99.74 55315 | 1 0.01 99.75 55755 | 6 0.06 99.81 56193 | 1 0.01 99.82 70260 | 9 0.09 99.91 70264 | 1 0.01 99.92 70334 | 1 0.01 99.93 70440 | 1 0.01 99.94 70457 | 1 0.01 99.95 70501 | 1 0.01 99.96 70619 | 1 0.01 99.97 70668 | 1 0.01 99.98 70673 | 1 0.01 99.99 70691 | 1 0.01 100.00 ------------+----------------------------------- Total | 10,000 100.00 by Jean Roth , jroth@nber.org , 28 Mar 2016